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2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)最新文献

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Flexible OFDM system for peak power reduction in OFDM-based Cognitive Radio context 基于认知无线电环境下OFDM峰值功率降低的柔性OFDM系统
2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA) Pub Date : 2013-05-12 DOI: 10.1109/WOSSPA.2013.6602406
B. Koussa, S. Bachir, C. Perrine, C. Duvanaud, R. Vauzelle
{"title":"Flexible OFDM system for peak power reduction in OFDM-based Cognitive Radio context","authors":"B. Koussa, S. Bachir, C. Perrine, C. Duvanaud, R. Vauzelle","doi":"10.1109/WOSSPA.2013.6602406","DOIUrl":"https://doi.org/10.1109/WOSSPA.2013.6602406","url":null,"abstract":"Systems based on Orthogonal Frequency Division Multiplexing (OFDM) take advantages of multicarrier modulations. Properties in term of dynamic spectrum adjustment make OFDM a promising technology for Cognitive Radio systems. An OFDM modulation suffers from high power peaks, which significantly degrade the power efficiency and the linearity of the transmitter. In this paper, the Tone Reservation method is used to reduce the Peak-To-Average Power-Ratio (PAPR) in OFDM systems. We intend to consider an adaptive algorithm to improve speed convergence and PAPR reduction gain, taking into account the complexity of the algorithm. The proposed approach is based on the Conjugate-gradient method which is a powerful gradient descent algorithm, reliable and efficient on a wide range of optimization problems. The radio-frequency Power Amplifier (PA) being the most sensitive element to envelope fluctuations, a class AB 2.4 GHz-2 W InGaP PA is used to evaluate the performance of the proposed method in terms of Bit Error Rate and Error Vector Magnitude.","PeriodicalId":417940,"journal":{"name":"2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126144783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Design of a multiblock general regression neural network for wind speed prediction in Algeria 阿尔及利亚风速预测的多块广义回归神经网络设计
2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA) Pub Date : 2013-05-12 DOI: 10.1109/WOSSPA.2013.6602397
F. Douak, N. Benoudjit, F. Melgani
{"title":"Design of a multiblock general regression neural network for wind speed prediction in Algeria","authors":"F. Douak, N. Benoudjit, F. Melgani","doi":"10.1109/WOSSPA.2013.6602397","DOIUrl":"https://doi.org/10.1109/WOSSPA.2013.6602397","url":null,"abstract":"In this work, we investigate a new design of a multiblock general regression neural network applied to wind speed prediction in Algeria. The idea in our proposed method is to minimize the error of the prediction for wind speed in such a way as to minimize the quantity of training samples used, and thus to reduce the costs related to the training sample collection. For this reason, we propose to select the most significant sample among a large number of training samples by using multiblock general regression neural network (MBGRNN). This paper presents experimental results on six different real wind speed measurement stations in Algeria namely, Alger, Djelfa, Bechar, Oran, Sétif and In Aménas. The wind speed data covers a period of ten years between 2001 and 2010.","PeriodicalId":417940,"journal":{"name":"2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126247586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Adaptive equalizer for Mode S receiver 模式S接收机的自适应均衡器
2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA) Pub Date : 2013-05-12 DOI: 10.1109/WOSSPA.2013.6602382
Allan Tart, T. Trump
{"title":"Adaptive equalizer for Mode S receiver","authors":"Allan Tart, T. Trump","doi":"10.1109/WOSSPA.2013.6602382","DOIUrl":"https://doi.org/10.1109/WOSSPA.2013.6602382","url":null,"abstract":"Mode S or mode “select” is a sort for a data exchange protocol used for air surveillance purposes. In here “select” means that the radar addresses its interrogation to one particular aircraft instead of interrogation with all planes inside the main beam of the radar antenna. Because of high equipage of Mode S transponders, it has become one of the cornerstones of today's air surveillance used for air traffic control purposes. Because of complex environments, such as airports with high number of reflecting surfaces and Mode S capable transponders, state-of-the-art algorithms must be used to overcome problems and to achieve maximum benefit from using enhanced surveillance systems. In this paper we investigate channel equalizer for Mode S receiver based on a combination of two adaptive filters.","PeriodicalId":417940,"journal":{"name":"2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121448354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Toward an adaptive extraction method of masses in digitized mammograms 数字化乳房x光片中肿块的自适应提取方法研究
2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA) Pub Date : 2013-05-12 DOI: 10.1109/WOSSPA.2013.6602343
Melouah Ahlem
{"title":"Toward an adaptive extraction method of masses in digitized mammograms","authors":"Melouah Ahlem","doi":"10.1109/WOSSPA.2013.6602343","DOIUrl":"https://doi.org/10.1109/WOSSPA.2013.6602343","url":null,"abstract":"The objective of segmentation operation is to separate the mass from the rest of the breast by trying to delimit its borders correctly. This article presents a semi-automatic mass extraction method by application of an adaptive region growing segmentation technique. The region growing process is guided by regional feature analysis; consequently, the result will be a robust algorithm able of respecting various image characteristics.","PeriodicalId":417940,"journal":{"name":"2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116666298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and performance evaluation of 802.11ad phys in 60 GHz multipath fading channel 60ghz多径衰落信道下802.11ad物理层的设计与性能评价
2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA) Pub Date : 2013-05-12 DOI: 10.1109/WOSSPA.2013.6602418
M. Zaaimia, R. Touhami, A. Hamza, M. Yagoub
{"title":"Design and performance evaluation of 802.11ad phys in 60 GHz multipath fading channel","authors":"M. Zaaimia, R. Touhami, A. Hamza, M. Yagoub","doi":"10.1109/WOSSPA.2013.6602418","DOIUrl":"https://doi.org/10.1109/WOSSPA.2013.6602418","url":null,"abstract":"IEEE 802.11ad is the new Wi-Fi standard operating at 60 GHz. This paper investigate the performance of specified modulation and coding schemes in additive white Gaussian noise channel and realistic 60 GHz band multipath fading channel. Three 802.11 ad physical layers, namely orthogonal frequency division multiplex physical layer, Single Carrier and Low Power Single carrier physical layer, are designed and evaluated in terms of bit error rate and packet error rate performances. Simulation results show that single carrier modes in most cases outperforms OFDM modes in LOS and NLOS scenarios. QAM based modulation schemes are sensitive to marginal channel conditions and provide poor performance in NLOS case, while BPSK and QPSK modulation schemes with low density parity coding are relatively more robust, and present a good choice at the cost of data rate reduction.","PeriodicalId":417940,"journal":{"name":"2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116800451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
Interferometer phase error and chromatic dispersion effects on the performances of 40 Gbit/s optical DPSK transmission systems 干涉仪相位误差和色散对40gbit /s光DPSK传输系统性能的影响
2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA) Pub Date : 2013-05-12 DOI: 10.1109/WOSSPA.2013.6602410
L. Kassa-Baghdouche, L. M. Simohamed
{"title":"Interferometer phase error and chromatic dispersion effects on the performances of 40 Gbit/s optical DPSK transmission systems","authors":"L. Kassa-Baghdouche, L. M. Simohamed","doi":"10.1109/WOSSPA.2013.6602410","DOIUrl":"https://doi.org/10.1109/WOSSPA.2013.6602410","url":null,"abstract":"The performance limitations due to interferometer phase error (IPE) and Chromatic Dispersion (CD) in a 40 Gbit/s optical Differential Phase-Shift-Keying (DPSK) transmission system are investigated through simulations. Two different optical filters (Fabry-Perot filter (FP) or Fiber Bragg Grating filter (FBG)) and both return-to-zero (RZ) and non-return-to-zero (NRZ) codings were assumed to find out whether these different configurations showed better performances. By means of numerical simulations, we optimize the bandwidths of the optical and electrical receiver's filters. Then, the impact of the IPE on the Bit Error Rate (BER) performance is analyzed when the received signal is filtered by two types of optical filter. The optical power penalties caused by the IPE impact at BER of 10-9 in the presence of CD are evaluated. Simulation results show that, without CD the system suffer a significant amount of power penalties due to the IPE, and the optical filter has an influence on the power penalties, i.e. the system with FBG filter has the better performances than the one with FP filter, while NRZ-DPSK modulation format exhibit almost the same power penalty that RZ-DPSK. However, it is found that with CD, the system which uses FP filter performs better than the one which uses FBG filter, i.e. owing to the presence of CD, the better performances switch from FBG filter to FP filter, whereas RZ-DPSK modulation format is more robust to IPE than NRZ-DPSK while FP optical filter is employed. This provides the basis for a tradeoff between FP & FBG Filters and NRZ-DPSK & RZ-DPSK modulations format through a careful selection of a suitable optical filter and an appropriate modulation format.","PeriodicalId":417940,"journal":{"name":"2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127134836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Hybrid chaos-based image encryption approach using block and stream ciphers 使用分组和流密码的混合混沌图像加密方法
2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA) Pub Date : 2013-05-12 DOI: 10.1109/WOSSPA.2013.6602351
Djamal E. Goumidi, F. Hachouf
{"title":"Hybrid chaos-based image encryption approach using block and stream ciphers","authors":"Djamal E. Goumidi, F. Hachouf","doi":"10.1109/WOSSPA.2013.6602351","DOIUrl":"https://doi.org/10.1109/WOSSPA.2013.6602351","url":null,"abstract":"Due to their fundamental features, chaotic maps are very suitable for various image encryption schemes. Most of the proposed discrete chaotic cryptographic approaches are based on stream or block cipher schemes. If these two schemes are combined the security level is improved by enhancing the encryption process complexity, the key space and the robustness of the cryptosystem. In the beginning, the image is divided into two sub-images. Next, these two sub-images are encrypted using respectively stream and block cipher schemes. After that, the two sub-images are merged to create enciphered image. Simulation results have shown the effectiveness and the robustness of the proposed scheme.","PeriodicalId":417940,"journal":{"name":"2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125961823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Analysis of speech production in a noisy environment 噪声环境下的语音生成分析
2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA) Pub Date : 2013-05-12 DOI: 10.1109/WOSSPA.2013.6602391
Ei Mouatassim Benzitounl, L. Falek, H. Teffahi, A. Djeradi
{"title":"Analysis of speech production in a noisy environment","authors":"Ei Mouatassim Benzitounl, L. Falek, H. Teffahi, A. Djeradi","doi":"10.1109/WOSSPA.2013.6602391","DOIUrl":"https://doi.org/10.1109/WOSSPA.2013.6602391","url":null,"abstract":"This study aims to identify the compensatory strategies that speaker develops in speech production in noisy environment. We have developed a method which allows studying the effect of noise on acoustic parameters that characterize the speech signal (F0 duration, formants, cepstral and LPC parameters). The results reflect the speakers' attitudes towards noise and allowed a classification of acoustic parameters used in order of the sensitivity to noise. These results can then be decisive in the choice of acoustic parameters in communication systems.","PeriodicalId":417940,"journal":{"name":"2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125173471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
3D radar using augmented 2D hardware — Sampling and processing concepts 三维雷达使用增强的二维硬件-采样和处理的概念
2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA) Pub Date : 2013-05-12 DOI: 10.1109/WOSSPA.2013.6602402
Graeme A. Jones, P. Weber, T. Nohara
{"title":"3D radar using augmented 2D hardware — Sampling and processing concepts","authors":"Graeme A. Jones, P. Weber, T. Nohara","doi":"10.1109/WOSSPA.2013.6602402","DOIUrl":"https://doi.org/10.1109/WOSSPA.2013.6602402","url":null,"abstract":"This paper explores the means by which 3D radar processing and target tracking can be achieved using conventional 2D marine radar hardware. A typical low-cost marine radar transceiver is coupled with a custom-developed antenna and sophisticated adjunct radar signal/data processor for this task. We look at how a 3D volume may be sampled for a number of different applications, and show how the data can be processed, analysed and visualized as a result. Finally, we provide some example results that have been collected and processed by this radar system.","PeriodicalId":417940,"journal":{"name":"2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121856649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improving fingerprint minutiae matching using local and global structures 利用局部和全局结构改进指纹细节匹配
2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA) Pub Date : 2013-05-12 DOI: 10.1109/WOSSPA.2013.6602376
Abdallah Bengueddoudj, S. Akrouf, Foudil Belhadj, D. Nada
{"title":"Improving fingerprint minutiae matching using local and global structures","authors":"Abdallah Bengueddoudj, S. Akrouf, Foudil Belhadj, D. Nada","doi":"10.1109/WOSSPA.2013.6602376","DOIUrl":"https://doi.org/10.1109/WOSSPA.2013.6602376","url":null,"abstract":"This paper focus on the use of local and global structures for fingerprint minutiae matching, we propose a set of modifications and improvements that increase the speed and accuracy. Reducing the number of minutiae pairs and descriptors are the principal amelioration in the local matching step, in the global matching step, we add more minutiae pairs to align the input fingerprint with the template fingerprint for more accuracy. A series of experiments conducted over the four databases of FVC2004 using a fingerprint verification framework, the results show that our improvements makes the novel algorithm more efficient compared to the original algorithm and other algorithms proposed in the literature.","PeriodicalId":417940,"journal":{"name":"2013 8th International Workshop on Systems, Signal Processing and their Applications (WoSSPA)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123574440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
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